Fumigator



(No Model.) y

A. R.. BOWKE-R 8v' J. D. MILLEN.

FUMIGATOR.

No.428,880 l Patented May 27,1890.

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UNITED STATES ,PATENT OFFICE.

ALBERT R. BOVKER AND JAMES D. MILLEN, OF VINONA,IMINNESOTA.

F U M l G AT O R SPECIFICATION forming part of Letters Patent No. 428,880, dated May 27, 1890.

Application led November 20, 1889. Serial No. 330,971. (No model.)

To a/ZZ whom zii; may con/cern:

Be it known that we, ALBERT R. BOWKER and JAMES D. MILLEN, of Vinona, in the county of Winona and State of Minnesota, have invented a new and Improved Furnigator and Vermin-Destroyer, of which the following is a full, clear, and exact description.

Our invention relates to that class of devices designed to fumigate a building or animalburrow by filling it with smoke impregnated with any desired chemical for the purpose of disinfecting the same or of destroying the vermin therein; and the object of our invention is to provide a convenient and efficient means of accomplishing` this result.

To this end our invention consists in a hollow cylinder provided with a fire-box and lgrate for burning the fuel that may be introduced into it, a chemical-box above the firebox to sprinkle the chemicals upon the nre, a piston to force the smoke through an opening in the cylinder, and suitable handles for operating the device.

The details of this construction will be hereinafter described, and more specifically pointed out in the claims.

Reference is to be had to the accompanying drawing, forming a part of this speciication, in which the figure is a vertical section of the entire device.

The lower part B of the main cylinder A constitutes a fire-box, and is provided with a grate a at the bottom. At thev upper end of the cylinder A and above the tire-box B is a cylinder C, which is provided with a removable cover b, which shuts into the cylinder and is provided with a handle b. Between the main cylinder A and the smaller cylinder, C is an air-chamber e, closed at the bottom by the partition d. At the lower end of the airchamber e is a valve f, opening from without into the air-chamber e, and a valve f', opening into the fire-box B from air-chamber e, and at the top of the air-chamber eis the valve g, opening through the top of the cylinder A into air-chamber e, and the Valve g, opening from air-chamber e and cylinder C. These valves are all closed by a small spring and only open upon pressure of air.

Vithin the cylinder C and suspended from the coverl b,to which it is attached by screwconnection, as shown, is a chemical-box fr',

which may be filled with any desired chemical, and is provided With a perforated bottom and with a valve j, which is operated by the rod h, so that the contents of the box will bes1; rinkled upon the fuel in the fire-box B bcneath. The rod h is attached to the valve j and extends up through the cover l), and is provided at the top with a thumb-piece p, by which it is operated. A spiral spring r encircles the rod 7L between the cover b and thumbpiece p. By pressing down the thumb-piece the valve j Will be opened and the contents of the box t' will be precipitated upon the fuel in the box B, and when the pressure is removed the spring r raises the rod h and closes the valvej. Vithin the airchamber e is a piston J, to which are attached the piston-rods K, Which extend through the top of the cyl-- inder A and are attached to the handle m.

At the bottom of the cylinder A is a removable cap D, provided with a vent a for discharging smoke, and a stirrup 0 for the foot of the operator. The cap D is made removable, so that J[he re-box B may be gotten at and cleaned.

The fire-box B being supplied with fuel which is inserted through cylinder C, the chemical-box '1I with chemicals, and a fire being lighted, the device is operated as follows: The operator inserts the vent n into an animal-burrow or room to be fumigated, places a foot upon the s tirrup o, and with the hands grasps the handle m. The air for supplying the re with oxygen enters through the valves f and g alternately. The operator now raises the piston J by the handle 1n and rods k. This opens valve f, closes the valve f', closes valve g, and opens the valve g', thus letting air into the cylinder C. The piston J is then forced down by the handle m. This closes the valve f and forces the air down through the valve f and iire-box B, Where it becomes impregnated with smoke and chemicals, and out through the vent a into the animal-burrow or surrounding air.

Having thus described our invention, what We claim as new, an d desire to secure byLetters Patent, is

1. A fumigator consisting, essentially, of a hollow cylinder having a fire-box in its lower end, a chemical-box in its upper end adapted to sprinkle chemicals upon the fire, an air- IOO chamber communicating with said fire-box, and a piston-valve and rods sliding in said air-chamberand adapted to force the chemically-impregnated smoke into the burrow or surrounding; air, substantially as described.

2. A fuinigator consisting, essentially, of a hollow cylinder containingl fumigating apparatus, as in the one shown and described, and having the cap D, with smoke-discharging vent n, and strrup o, for the foot of the operator, removably attached to the bottom of said cylinder, substantially as set forth.

In a fumigator, a hollow cylinder eontaining` a nre-box, a chemical-box, with a perforated bottom, suspended above the fire-box and controlled by a valve, in combination with means, as piston J, rods K, and handle m, for expelling the smoke into the burrow orsurroundin g air, substantially as described.

4. The combination, in a fumigator, of the cylinder A, having' outlet and inlet valves, as

Shown, provided at its lower extremity with the removable cap D, havingl slnoke-discharg- :ing vent n and strrup o, for the foot of the operator, and provided with the interior cylinder C, and perforated chemical-box fi, suspended in the upper part thereof, with the piston J, rods K, and handle lnnfor expelling; 

